The 76-year-old Monty Python legend, who has his own YouTube channel, agreed to help Now TV catch up any uninitiated drama fans who may want to watch the zombie show.

And it turns out that despite being a septuagenarian, John really does have an exceptional memory.

With his typical dry sense of humour, Cleese notes that lead character Rick Grimes is ‘essentially Clint Eastwood but a bit more sensitive’, describes sex as ‘boffing’ and refers to David Morrissey’s villain The Governor as ‘Patchy Pete’.